The Federation is engaged in a war, everybody is terrified of changeling infiltrators, yet these misfits got out of their mental hospital and all the way to DS9 on board a Starship, just by telling anybody who questioned them that it was a stupid question?

Plotline

Dr. Bashir performs a new surgical technique on a genetically engineered woman who is so introverted that she never speaks to anybody. When the operation is a success he finds himself strongly attracted to the woman, but just whose best interests does he have in mind?